Belt-shifter



(No Model.)

E. O. DURAND.

BELT SHIFTER. No. 255.607 Patented Mar 28,1882.

N4 PETERS, PhoKwLithngn-aplwr, Wash? nnnnnnn C.

Um'reo STATES PATENT OFFICE.

EDWIN O. DURAND, OF GREENWIGH, OHIO.

BELT-SHIFTER.

SPECIFICATION forming part of Letters Patent No. 255,607, dated March 28, 1882.

To all whom it may concern:

Be it known that I, EDWIN U. DURAND, a citizen ofthe United States, residing at Greenwich, in the county of Huron and State of Ohio, have invented certain new and useful Improvements in Belt-Shifters, of which the following is a. specification, reference being had therein to the accompanying drawings.

My invention relates to belt-shifters; and it consists in the construction and arrangement ofits several parts, as will be hereinafter fully set forth, and pointed out in the claims.

In the drawings, Figure 1 isa. sideelevation of the shifter applied, and Fig. 2 is a vertical longitudinal section, and Fig. 3 is a top plan view.

A is the shifter. It consists of the side pieces, a a, formed as shown, and having cut in their straight edges the semicircular recesses a a, through which passes the pulleyshaft. They are secured together by the strips a a", as shown. Journaled between the outer portions of the strips and projecting above their edges are rollers a B and U are working-pulleys on the shafts b c, and are connected by the belt- D,as shown.

E is one of the ceiling-joists. The semicircular recesses a are placed over the shaftb (No model.)

and the. pulley made secure in position by the braces e 6, attached to it and to the joist E. The rollers a a will be on a level with the periphery of the pulley B.

F is the shifting-bar, and by it the belt D is thrown from the pulley B onto the shifter.

In operation, when it is desired to shift the pulley F, as the edges of the belt slip over onto the shifter itsrollers a will revolve on the belt and will prevent all burning or breaking of the leather. The braces c 6 will prevent the belt from slipping off the shifter.

What I claim is- 1. The shifter A, consisting of the side pieces, at a, formed as shown, secured together by the strips a a and having journaled between them the pulleys a", and adapted to be secured to the joist E by the braces 12 e, substantially as shown and described.

2. The shifterA and its pulleys a in. con1- bination with the pulley B and shifting-bar F, all arranged to operate as set forth.

In testimony whereof I hereby affix my signature in presence of two witnesses.

EDWIN O. DUB-AND.

Witnesses:

FRANK CARR, JNo. B. SMITH. 

